Im getting this error when importing an OBJ file

Hey guys, i have exported a model from Keyshot to an OBJ file with MTL file

But when I import it into blender…im getting this error:

Python: Traceback (most recent call last):
File “C:\Program Files\Blender Foundation\Blender 2.91\2.91\scripts\addons\io_scene_obj_init_.py”, line 146, in execute
return import_obj.load(context, **keywords)
File “C:\Program Files\Blender Foundation\Blender 2.91\2.91\scripts\addons\io_scene_obj\import_obj.py”, line 1061, in load
vdata, vec, vdata_len)
File “C:\Program Files\Blender Foundation\Blender 2.91\2.91\scripts\addons\io_scene_obj\import_obj.py”, line 938, in handle_vec
vec[:] = [float_func(v) for v in line_split[1:]]
File “C:\Program Files\Blender Foundation\Blender 2.91\2.91\scripts\addons\io_scene_obj\import_obj.py”, line 938, in
vec[:] = [float_func(v) for v in line_split[1:]]
ValueError: could not convert string to float: b’-nan(ind)’

location: :-1

Does anybody know what this means?

I guess the Keyshot exporter added some features to the .obj which your importer can´ t handle.
Options: Try (all) other .obj importers. Check the obj file with a text editor if it is ascii format. Maybe its just some identifiable akward part. Compare with standard obj format. If you can adjust the Keyshot obj exporter start with the simplest/fewest options and work your way up. If that does not work, try another format. Just my 2 cents.